Fluid-pressure control for cylinder cocks



April 2, 1929. E. G. GROSS 1,707,264

FLUID PRESSURE CONTROL FOR CYLINDER COCKS Filed NOV- 1925 2 Sheets-Sheetl Vent n1 B servou' I Edward 6! Gross,

April 2, 1929. E. G.- GROSS 7 1,707,264 I FLUID PRESSURE CONTROL 1 6CYLINDER cocKS Filed Nov. 4, 1925 2 Sheets-Sheet 2 flan/mu 6f Gross,

Patented Apr. 2, 1929.

EDWARD G. GROSE, E IVIUIIIGQMERY, ALABAMA.

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Application filed November The invention has for an ohjectto effect jinnprovenients in devices for the control of cyl inder cocks oflocoino'tivesby an air or steam line and valve inthe cab. llt relatesparticularly to that type in which a reciprocal piston operates a leverconnected to the ordinary c .mlercocl: by link or otherwis-ie. l an.unportant aim of pus invention to silo fy the connections requiredbetween the engine parts and the cylinder of the cock co. o device. Afurt er important aim is to provide :l/(lfiilt't) of his kind which isadapted to be niannfac l at a lowcost with extremely simple pairs, andwhich will be liable in a mininnf '11 degree to damage and reriation.One of the roreinost purposes t the invention is to embody a device ofthis kind which will also eliminate access of dust and grit to theworking parts.

Additional objects, advantages and features of invention reside in theconstruction, arrangement and combination of parts as may l we morereadily iuidorstood from the following drweription and the accompanyingdrawings, wherein,

liinure l a side elevation of a locomotive cylinder with my control.device applied thereto and connected to the cocks.

Figure 2 is an ei'ilarg'ed side elevation of the control devicedetached.

Figure 3 is a longitudinal sectional view thereof.

Figure 4-, is a cross section on the line 4-4: of Figure 2.

Figure 5 a front end vice.

Figure 6 is a rear elevation thereof.

Figure '7 is a bottom view of the device.

Figure 8 is a detail of the piston detached.

There is illustrated a locomotive cylinder 10 and a portion of a lowercross head guide 11, upon the under side of which there is mounted acylinder casting or case 12,11aving a smoothly finished bore therein.The cylinder body has an integral head 13 closing one end thereof, inwhich there is cored a longitudinal passage 14; or air duct, which leadsinto a transversely bored ear or lug 15 formed on the heat 13, andinteriorly threaded to receive a plug" 16 atone side, an air pipeterminal 17 at the other, leading from atwoway valve 18 of .any usualconstruction, formally indicated in the drawings, and which is adaptedto form a connection between the terminal 17 and train pipe or reservoirof the engine when in one position, and

elevation of the do 4, 193 35. Serial. no. 66,368.

in another position to vent air from the pipe 17 to the a osphere.Various valves suit able "for lllln use are well known, cennnerciat y,and illustration of the details is therefore considered not nccesstny.

The end of the cylinder bore opposite the head 13 opens flush through amachined face on the-end of the castingand is closed by a cap 19, thecap and the cylinder casting; being flaring-ed, and secured togetherbybolts 20; 'llhe cdinder casting is also formed with a longitudinallyprojecting foot lug; 21 at the upper side adjacent the head 14, and twolateral :lbot lugs fill 3 adjacent the ()illlt'ltllfill end of thecylinder, the three lugs being adapted to set so ugly upon a planlforinsin-face. ill; the lower side of the cylinder midway of the len .1 otthe here in the main misting, an opening 23 is formed beside whichtransversely extending flanges 52% are :lorn'icd joined integrally tocar." 525 at the sides, the

cars and flanges together forming a rectangular opening, in which thereis set with a snug lit the hub 25 of a lever having a short arm 26extending inwardly and providing; a knob 2''? of cylindrical. forinarranged on an axis transversely of the cylinder and parallel to thepivot of the'lever adapted to oscillate in a vertical axial plane in thecylinder 12. This lever has also a long arm 28 extending outwardly andcurving slightly toward the cap 19, a link 29 connecting this lever tothe usual rod or other element as at 30 ordinarily provided on cylindercocks under the engine cylinder for their operation. The huh receivesthercthrough a bolt secured in the ears 25.

Eilidahlc in the bore of the cylinder there is a piston 31, having heads32 and 33, the first adjacent the head 13 of the cylinder, While theother is presented toward the open end of the cylinder and the cap 19.The heads 32 and 33 are connected by two longitudinal bars 34, betweenwhich there are cross bars 35 spaced and smoothly finished to snuglyengage the knob 2'? so that the. piston will be reeiprocatcd hyoscillation of the lover. The piston heads 32 and 33 may be bothsimilar, smoothly finished to slide freely in the cylinder 12, but thehead 32 is provided with packing; rings 33 whereby to confine compressedair or steam between this head and the head 13 of the cylinder 19..

It should be noted that the cap it) is interiorly of somewhat smallerdiameter than the bore of the cylinder 12, and set in this the piston31.

cap there is a helical spring 36, of a strength sufficient to operatethe piston and lever and move the cylinder cocks from. closed to openthe hub by means of plates 41 secured thereon by screws 42 engaged inthe flanges 2 1.

It Will be seen that the device is adapted to be put in place andconnected with the cylinder cocks on locomotives: of ordinaryconstruction with a nnnnnuin of diiiiculty,

' and the nature of the construction is such that the device will not bereadily damaged, nor deteriorate GXCESSIVGlY, as will e readily undcrstood,

In use, it will be seen that it is only necessary to admit air to thecylinder 12 to close the cocks; andwhen the engineers valve is movedproperly, it will relieve air pressure in the feed pipe 17 and thespring 31- will function to return the device to initial position,opening the cylinder cocks again. The device is thereby suitable to usewhen air prcssure fails, by manipulation of the arm 28 of the lever, oradmission of steam to the 'i'eed line 17.

I claim:

In a motor device of the character described, a case having an opening,and a lever pivoted in the opening, an enlargement eoncentric with thepivot "formed on said lever and insertable through said opening, anenlargement on the case at opposite sides of the opening and havinginclined fares at the outer side convergent outwardly toward theopening, clamping plates respect irely mounted over said tacos, means topress the plates toward said faces, and packing pieces adjustablebetween the plates and said faces to bear upon the said enlargement onthe lever and to close the spaces at respective sides of the lever inthe opening.

In testimony whereof I aliix my signature.

EDlVARD G. G ROSS.

